Ncert Exercises & Solutions

A ball of snow when rolled over snow increases in mass, volumeandsize. Is this comparable to growth as seen in living organisms? Why?

Class 11 pg 4
Growth in biological terms is characteristic feature of all living organisms. It relates to increase in size by accumulation of protoplasm in the cell thus results in increasein size of the cell. Whereas increase in number of cell by cell division results is the size of individual organism.

Snowis an inanimate (non-living) object, while rolling over snow, it gathers more snow on its surface thus, it increases in size by physical phenomenon but not by biological phenomenon. So, this growth cannot be compared to that seeninliving organisms.

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